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-
- Western Digital is a registered trademark of Western Digital
- Corporation; IBM PC, AT and XT are registered trademarks of the
- International Business Machines Corporation; MS DOS, OS2 and PC DOS
- are registered trademarks of Microsoft Corporation.
-
- WD1003A-RA2
-
- User Guide
-
-
- The WD1003A-RA2 controller is designed to interface with up to two
- floppy disk drives and up to two Winchester ST506/ST412 RLL type hard
- disk drives in an IBM PC AT or compatible system and will support
- drives with up to 16 read/write heads and 2048 cylinders. Each drive
- may be a different configuration. With the 2, 7 RLL encoding feature
- of the WD1003A-RA2, up to 50% more data can be compacted onto a
- certified RLL hard disk drive using a 26 sectors per track format.
-
- NOTE
-
- DO NOT USE THE WD1003A-RA2 WITH MFM TYPE HARD DISK DRIVES
-
- Installation of the controller requires three steps: 1) verifying
- jumper settings; 2) installing into the host computer; 3) formatting
- the hard disk drives. To complete installation, you will need the
- following:
-
- Two hard disk cables (3 if using 2 hard disk drives); one 34 pin
- floppy drive cable (a daisy chain type cable if using two floppy disk
- drives); Winchester hard disk drive; floppy disk drive; screwdriver;
- MSDOS Version 2.0 or later; IBM Advanced Diagnostic diskette (or
- similar program for IBM compatibles); System Diagnostic Diskette (or
- equivalent); FDISK and Format utility (normally included with MSDOS).
-
- Preparation of Controller
-
- WARNING
- HANDLE THE CONTROLLER BY THE ENDS OF THE BOARD
- SOME OF THE CHIPS ARE STATIC SENSITIVE AND DAMAGE
- MAY OCCUR IF THE BOARD IS INCORRECTLY HANDLED
-
- Before you can install your WD1003A-RA2, you will need to be certain
- that the jumpers (small shorting plugs) are correctly set. Refer to
- Table 1 for correct jumper settings. Modification of factory jumper
- settings is rarely necessary. Modify jumpers only under the
- direction of a qualified individual; i.e. your dealer.
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- ┌──LED─────────────────────────────────────────────────────────────┐
- │ ┌─J1 ┌────┐ ┌────┐ ┌─────────┐┌─────────┐ │
- │ └─┘ └J2──┘ └J3──┘ └J4───────┘└J5───────┘ │
- │ ┌───────┐ │
- │ 2∙ ∙4 W3 1∙ ∙2 └WD16C92┘ │
- │ 1∙ ∙3 W4 2∙ ∙4 W7 ∙ ∙ ∙1 │
- │ W1∙ ∙ ∙ ∙ ∙ ∙W2 5∙ ∙6 3 2 │
- │ 3 2 1 ∙ ∙ ∙ ∙1 │
- │ WD1003A-RA2 W5 ∙2 │
- └───────────────────────────────┐ ∙3 ┌──┐ ┌───┘
- └┴┴┴┴┴┴┴┴┴┴┘ └┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
-
-
- Table 1
-
- Jumper Position Function
-
- W1 1-2 This configuration used with a WD11C00C-22
- at board location U16.
-
- 2-3 Required only onearly units with WD11C00-22
- at board location U8 and W5 is jumpered 1 to
- 2. DO NOT JUMPER WITH WD11C00C-22
- INSTALLED.
-
- W2 1-2 Standard factory setting. No translation for
- OPEN drive 0.
-
- 1-2 Enables translation for drive 0. Translation
- CLOSED is only available for 615 cylinders and four
- headed drives. In translation mode, the
- controller translates the 26 physical
- sectors per track into 17 sectors. The extra
- sectors are "translated" into logical heads.
- To use the translation mode, select through
- the Setup program a 615 cylinder and six
- head drive type. (This is drive type 3 for
- IBM Personal Computer AT users. Not all AT-
- compatible systems use the same drive tables
- as IBM.) This configuration must be used
- when running an operating system or applica-
- tion program which requires a 17 sector per
- track disk drive.
-
- W2 3-4 Standard factory setting. No tranlation
- OPEN Drive 1.
-
- 3-4 Enables Drive 1 translation
- CLOSED
-
- W3 3-4 Standard factory setting. DO NOT OPEN.
- 1-2 Standard factory setting. DO NOT OPEN.
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- W4 3-5 Standard factory setting. Selects primary
- addresses, 1F0 through 1F7 hex, for the
- hard disk controller. Do not modify the
- primary address jumper unless your operating
- system is configured to accept more than two
- hard disk drives. Also verify that W4
- positions 4 and 6 are connected, if 3 and 5
- are jumpered.
-
- 4-6 Standard factory setting. Selects primary
- addresses, 3F0 through 3F7 hex, for the
- floppy disk controller. Do not modify the
- primary address jumper unless your operating
- system is configured to accept more than two
- hard disk drives. Also, verify that W4 3
- and 5 are connected, if 4 and 6 are
- jumpered.
-
- 1-3 Selects secondary addresses 170 through 177
- hex, for the hard disk controller. Also
- verify that W4 2 and 4 are connected, if 1
- and 3 are jumpered.
-
- 2-4 Selects secondary addresses, 370 through 377
- hex, for the floppy disk controller. Also
- verify that W4 1 and 3 are connected, if W4
- 2 and for are jumpered.
-
- W5 1-2 Standard factory setting. Closed by etch on
- the solder side of the board. Configures the
- board to control drives with a maximum of
- eight heads or Reduced Write Current (RWC).
-
- 2-3 Carefully cut etch and jumper to operate the
- controller with hard disk drives having a
- maximum of 16 heads.
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- W7 2-3 Standard factory setting. Supports 300 or
- 360 RPM floppy disk drives.
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- 1-2 Supports dual speed spindle floppy drives.
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- Hardware Installation
-
- WARNING
- MAKE SURE COMPUTER IS TURNED OFF
- AND POWER IS DISCONNECTED
-
- 1. Verify that your host computer has a 135 watt power supply. If
- the disk drive(s) is(are) being installed internally, it is best to
- locate the controller in the nearest available expansion slot to the
- drive.
-
- 2. Remove the blank expansion slot bracket. Put the bracket away
- and save it for possible future use. The screw will be used to hold
- the new controller in place.
-
- 3. The terminating resistor must be present only on the last hard
- disk drive connected. If there are two drives, the terminating
- resistor must be present on the second drive. Verify proper setting
- of drive select switches for drive select 1 or 2. Refer to your
- system owner's manual for information about proper drive termination
- and select switches.
-
- 4. Attach 34-pin control connector pin 1 to J4 on the controller
- board. Make sure that Pin 1 of the cable connector goes to Pin 1 on
- the controller board. Pin 1 of the cable connector is typically
- located on the color coded side of the cable.
-
- 5. Connect control cable to drive.
-
- 6. Attach 20-pin data connector to J3 (Drive C or 0).
-
- 7. Attach 20-pin data connector to J2 (Drive D or 1).
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- 8. Connect data cables to drives.
-
- 9. Attach 34-pin floppy cable connector to J5.
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- 10. Attach Winchester activity LED connector to J1.
-
- 11. Install controller board into the expansion slot. Make sure that
- the board is seated properly by pressing down on both ends of the
- board. Secure the board with the bracket screw.
-
- 12. Remove or disable any other floppy controller in your system
- when installing a WD1003A-RA2. It is NOT possible to disable the
- floppy controller on the WD1003A-RA2.
-
-
- CAUTION
- WHEN ROUTING CABLES, BE CAREFUL NOT TO PINCH
- THEM. CABLES MUST NOT GET CAUGHT BETWEEN THE
- COVER AND THE BOARDS, NOR SHOULD THEY OBSTRUCT
- ANY AIR FLOW PATH FROM FANS OR VENTS.